Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7367740 | Mechanically lockable universal joint and structures employing such joint An adjustable support stand for an article such as a camera employs a plurality of elongated links connected to one another at their ends by lockable universal joints. Each joint consists of a pair of complementary knuckles, each joined to a link end by a splined co... | 05/06/2008 |
| 7231856 | Apparatus and method for detecting dangerous conditions in power equipment A machine such as a saw, jointer, planer, etc. is disclosed. The machine has cutting tool, a direct drive mechanism configured to move the cutting tool, a detection system adapted to detect the occurrence of an unsafe condition between a person and the cutting tool,... | 06/19/2007 |
| 7226360 | Grease cap for a constant velocity joint A frangible grease cap for use in a collapsible constant velocity joint. The frangible grease cap includes a body generally having a circular shape. The frangible grease cap includes an orifice through a center section of the body. The grease cap also includes at le... | 06/05/2007 |
| 7073797 | Tool holder for annular core bit A tool holder (1) and a shank (8) for quick mounting and dismounting an annular core bit (2) both include cooperating respective guide members (4, 4′) provided at their bit-side ends, flanges (3, 9) arranged coaxially with the gu... | 07/11/2006 |
| 7055220 | Adjustable handle with a control push button incorporating fast mounting and removal means Adjustable handle (1), of the type comprising an operating lever (2) ending into a cylindrical or prismatic body (3) inside which there is slidably mounted a tightening member (4) carrying a bushing or a stud (5), the cylindrical o... | 06/06/2006 |
| 7040023 | Toolless blade holder for a reciprocating tool A reciprocating saw is provided having a motor oriented within a housing for operably driving a saw bar and blade holder in a reciprocating motion. The blade holder has a longitudinal slot for receiving a saw blade, and a transverse aperture extending into the longi... | 05/09/2006 |
| 6926109 | Hydrostatic motor drive mount A tracked vehicle includes a track operatively connected to a driveshaft. An output shaft of a hydrostatic motor is selectively rotationally engaged with the driveshaft via a clutch mechanism. When the clutch mechanism is engaged, the motor drives the track. When th... | 08/09/2005 |
| 6907809 | Positioning device for saw blades A saw blade positioning device has two drive mechanisms and two guidance devices, which are preferably oriented at right angles in respect to each other. If a first guidance device is oriented in the radial direction of the circular saw blade by the linear guides, a... | 06/21/2005 |
| 6702508 | Mechanical connection using non-circular inter-fitting components The invention relates to a mechanical connection for transmitting torque, demonstrating a common longitudinal axis a shaft rotating around the longitudinal axis and a hub coaxial to the shaft, its inside contour surrounding the shaft via a slaving section... | 03/09/2004 |
| 6623202 | Toothed tool coupling for rotating a rotary tool A driven tool includes a driven part which is rotatably driven by a drive part. The driven part and the drive part are coaxially arranged one inside of the other. The drive part and the driven part are conical as viewed in a longitudinal section plane con... | 09/23/2003 |
| 6139216 | Reversible device for locking a constant-velocity joint to a hub In a device for reversibly locking a constant-velocity joint (2) with respect to a hub (1), the constant-velocity joint is axially locked to the hub by means of a spring-lock ring (21) of circular cross section recessed in a circumferential groove (22) in... | 10/31/2000 |
| 6045292 | Fitting for mounting a winch on the structure of an aircraft such as a helicopter A fitting for mounting a winch includes an axially sliding ring between an internally splined bearing and a splined shaft. Utilizing internal splines, the ring is constantly engaged with the external splines of the shaft. Axial sliding of the ring, facili... | 04/04/2000 |
| 5674024 | High speed fastening system A high-speed fastening system includes a conventional yoke coupled to a likewise conventional shaft provided with specific fastening elements, via a vertically movable outer casing and a central body into which the shaft is inserted so as to secure the yo... | 10/07/1997 |
| 5667330 | Quick-connect mechanism for releasably retaining a power take-off shaft within an output shaft hub A locking mechanism for releasably fixing an externally splined power take-off shaft to an output shaft of off-highway equipment such as a tractor. The output shaft has a hollow, internally splined hub portion adapted to axially receive the externally spl... | 09/16/1997 |
| 5641238 | Quick change coupling A quick change coupling is provided which is especially suitable for a flexible cable. It includes a rotary driving assembly which includes a source of rotary power, a driving adaptor section which is coupled to and rotated by this source, a driven adapto... | 06/24/1997 |
| 5601380 | Quick disconnect coupling device A coupling device for connecting an externally splined shaft having a circumferential groove therein to an internally splined member. The internally splined member has a plurality of radial openings in the sides thereof which receive a corresponding plura... | 02/11/1997 |
| 5098343 | Retractable shaft coupling Difficulty in disconnecting two coupled shafts (38, 40) is avoided through the use of a retractable shaft coupler which includes a sleeve (22) which can engage respective shafts (38, 40) at each of its ends and having at least one spring (28) coaxially po... | 03/24/1992 |
| 4932809 | Lost motion splined coupling device A coupling device for coupling and decoupling first and second coaxial members comprises an annular member which is supported coaxially on one of the first and second members by means of a bi-directional lost motion connection so as to permit relative rot... | 06/12/1990 |
| 4919221 | Impact drill bit assembly and replaceable parts thereof A downhole drill bit having an elongated male drive shank, a separate female impact head mounted on the drive shank, the drive shank and head having cooperating external and internal, head drive splines extending helically in one angular direction to urge... | 04/24/1990 |
| 4738446 | Apparatus for securing exercise weights on shafts A securing mechanism for holding an exercise weight-disc on the end of the lifting bar while allowing a modicum of rotational movement in the disc as the bar is being manipulated by the exerciser. A sleeve-like collarpiece, having a smooth cylindrical bor... | 04/19/1988 |
| 4697949 | Plug, socket and plug-and-socket coupling thereof for temporarily attaching an implement to a handle A plug-and-socket coupling temporarily attaches a handle to an implement. The plug has a cylindric plug body with an attachment device on one end for one of the handle or implement. A flange projects radially from the attachment-device end of the plug bod... | 10/06/1987 |
| 4692049 | Quick disengagement apparatus for power wheel mechanisms An improved quick disengagement apparatus is provided for selectively altering the positioning of an axially translatable member between an axially biased first position and a second position in opposition to said axial bias, and for releasably locking sa... | 09/08/1987 |
| 4687367 | Device for maneuvering fast connection tangential button operated of splined profile clutches, especially on end forks of agriculture cardanic shafts Device for maneuvering a fast connection tangential button operated in the tranmissions having splined profile clutches or joints, comprising an annular member encircling the body of the joint and having an internal profile making up a thrust surface able... | 08/18/1987 |
| 4657428 | Quick change mechanism for circular saw blades and other spinning disc devices In one embodiment of this quick change mechanism, a narrow six spline hub is installed in the arbor hole of a circular saw blade or other disc tool heads such as grinders, sanders and buffers. This hub slides onto a matching splined drive shaft in which a... | 04/14/1987 |
| 4588323 | Coupling device A coupling device for connecting a drive shaft in a farm implement wherein a support arm is pivotally mounted at both ends thereof with the drive shaft in order to support the drive shaft in a manner which facilitates coupling thereof with a drive source.... | 05/13/1986 |
| 4453852 | Hub disengaging apparatus for combines or the like An improved mechanism is provided for selectively altering the positioning of an inwardly depressable, outwardly biased, shiftable structure, such as a splined shaft, and for releasably holding such structure in either of an inwardly depressed or an outwa... | 06/12/1984 |
| 4392759 | Quick disconnect mechanism for shafts A feature of this invention is the provision of a quick disconnect and connect mechanism for the transmission of torsional power between two concentric shafts including a collar, spring means which biases said collar to a first disposition whereat it hold... | 07/12/1983 |